Spotted lanternfly predicted to establish in California by 2033 without preventative management

Area of Science:

• Ecology
• Invasive Species Biology
• Agricultural Science

Background:

• Accurate forecasting of invasive species spread is crucial for natural resource management.
• The spotted lanternfly (SLF, Lycorma delicatula) is an invasive pest with significant economic implications for agriculture.
• Previous models predicted the potential range of SLF in the US but not the timeline for its arrival on the West Coast.

Purpose of the Study:

• To forecast the potential arrival of the spotted lanternfly (SLF) on the West Coast, specifically impacting California's fruit industry.
• To utilize process-based modeling to predict the spatio-temporal spread of SLF.
• To provide an early warning system for growers and decision-makers regarding SLF invasion risks.

Main Methods:

• Employed process-based modeling to simulate the spread of SLF.
• Assessed the spread dynamics under conditions with no population control treatments.
• Focused on forecasting the arrival timeline in key grape-producing regions of California.

Main Results:

• SLF has a low probability of reaching California's grape-producing counties by 2027.
• A high probability exists for SLF to reach these areas by 2033.
• The study provides a baseline for evaluating future control strategies.

Conclusions:

• Spatio-temporal modeling is vital for predicting invasive species" spread and enabling proactive management.
• The findings offer critical advance information for the West Coast's multi-billion-dollar fruit industry.
• This research serves as an essential early alert system for agricultural stakeholders facing potential SLF invasion.